The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2002
Filed:
Oct. 12, 2000
Franz Gratzer, Stallhofen, AT;
Abstract
A speed-difference-dependent hydraulic, consisting of a stationary rotating gear housing ( ) with a housing ( ) which forms a reservoir for operating fluid, a hydrostatic displacement machine ( ), a drive shaft ( ), a friction coupling ( ) and a piston ( ) to have an impact on the friction coupling ( ), by which pressure is created in a pressure chamber ( ) when there is a differential speed between the gear housing ( ) and the drive shaft ( ). In order to achieve quick regulation and adaptation of the characteristics, a first and second opening ( ) are connected by means of a first and second rotating insertion ( ), and a first and second regulating control valve ( ) are connected with the reservoir ( ), by which the first and the second control valves ( ) are formed as regulating throttle valves, so that independent of the direction of the differential speed, it can be controlled on the respective supply side as well as on the discharge side of the displacement machine.